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物理 大学生・専門学校生・社会人

電気電子回路です。 この分野の専攻ではないのでできるだけわかりやすく説明していただきたいです。 よろしくお願いします。

R (1-1) 10, (1-2) 20 (1-3) 30, (2-1) 10, (2-2) 30, (2-3) 15, (2-4) 10 (1) 演算増幅器 (operational amplifier) 抵抗 (resistance), キャパシタンス (capacitance) から構成される回路 (circuit) について以下の各小問に答えよ.なお,図中の記号は以下の凡例に従うとする.また, 正弦波交流電 圧 (sinusoidal AC voltage) は複素数 (complex numbers) 表示されており、 その絶対値は実効値 (effective value) を表すとし,演算増幅器の利得 (gain) 及び入力インピーダンス (input impedance) は無限大, 出力インピーダ ンス (output impedance) は0であるとする. 虚数単位 (imaginary unit) が必要な場合には」 を用いること. V V. d+o 凡例 + 図1 aR R otol C tr (11) 図1に示す非反転増幅器 (non-inverting amplifier) の利得 A = Vout/Vim を求めよ。 なお は 0 または正の実 数である。 Vout V (12) 図2に示す回路において, 角周波数 (angular frequency) の正弦波交流電圧を印加した. 回路の利得を =vk/vo としたとき、βの絶対値を最大とする角周波数 ac を R, Cの式として示すとともに, w=a の 時の入力電圧に対する出力電圧 Pb の位相差 (phase difference) を求めよ。 (feedback circuit) として図2の回路を追加した図3の回路を考える. 今,α を0から 回路 (13) 図1の回路に 連続的に増加させながら出力 Vout を観測したところ、あるαの時に発振 (oscillation) を開始した. この時 の及び発振周波数 (oscillation frequency) を R, Cの式として示せ . 抵抗値R を持つ抵抗 〇 静電容量 (electrostatic capacity) Cを持つキャパシタンス ○ 正弦波交流電圧を出力する電圧源 演算増幅器 接地 (earth connection) C R 3 図2 Rok 20 V₂ V₂ aR 図3 R Vout -o

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TOEIC・英語 大学生・専門学校生・社会人

自分の回答と照らし合わせて確認したいので、答えがなにになるかどなたか教えてください。 解説もあると助かります。

5 A Matter of Taste Reading Passage 042 At the age of just 22, Jamie Oliver became well known across the UK as "The Naked Chef." He called himself this not because he cooked wearing no clothes, but because he wanted to simplify food preparation so that everybody could follow his recipes. He wanted to "strip down" the idea of cooking. Since then he has had numerous TV shows, published 50 many books, and has become a household name in the UK. Today, one of the activities Jamie Oliver is best known for is his great effort to improve the school dinners that children eat every day. One day, he visited the kitchen of a typical London secondary school, and he was shocked to see how much processed junk food the kids were given to eat each day. Fat and sugar levels were extremely high, and nutritional values very 10 low. The "turkey twizzler" became the symbol of these unhealthy meals: processed meat containing 21.2% fat and only 34% actual turkey. Oliver ran the school kitchen for one year and tried to show that it was possible to serve healthy meals on a limited budget—and that kids actually enjoyed eating them. His mission was to radically change the eating habits of children in that school, and across the country. 150 200 15 20 25 CULTIES 250 His project (the "Feed Me Better" campaign) has had some influence on school dinners in the UK. After watching the documentary Jamie's School Dinners, 271,677 people signed a petition calling for healthier school meals. This led the Prime Minister to agree to spend 280 million pounds (about 37 billion yen) on school dinners, to ban some junk food from school menus, and to create a School Food Trust to provide support and advice for people preparing school meals. Research, by the way, shows that children who stop eating sugary, fatty food and instead eat Oliver's school dinners are better behaved in class, and they get higher test 300 scores, too. 350 Of course, the project has had some problems. At first, many students (and even parents) resisted the removal of the junk food they were so used to. In one famous instance, some parents were passing local takeaway food to their children through the school fence. Also, schools that followed the plan for a while were often found to gradually drift back into bad habits. After all, it is easier and cheaper to just give the kids junk food. However, Oliver's efforts represent a positive start, and with obesity becoming such a huge problem (see Unit 4), 400 it's a very necessary start.

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英語 高校生

1枚目→長文 2枚目→自分の回答 2枚目の私がまちがえているところについて解説していただきたいです。 長文も読解してもらわないといけなくなるので大変だと思いますがよろしくお願い致します☺︎

英文フレーズリーディング devenovls der 1段落契約農家は過去に発見された種の中から都合のよい種だけを選択して栽培や飼育をしている。(40字) ① Over the centuries,/ farmers have discovered thousands of different species of food crops. // ② Each species has 農家は何千もの異なる食用作物の種を発見してきている 何世紀にもわたって それぞれの種は特別 special qualities. // ③Some can be grown / in very hot or cold climates.// ④ Others are not affected / by certain 育つことができるものもある 非常に暑いまたは寒い気候で な品質をもっている 他の種は影響を受けない 特定の病気の diseases. // ⑤ However,/ you won't find many of these species / in your local supermarket // ⑥ To feed the seven しかし これらの種の多くを見つけることはできない 地元のスーパーマーケットでは 地球上の70億人を養 billion people on Earth,/ most farmers today are growing only species of plants / and farming only species of animals / うために 今日ほとんどの農家は植物の種のみを栽培したり 動物の種だけを飼育している that are easy to produce in large numbers.// ⑦Meanwhile, / thousands of other species are becoming extinct.// 大量生産しやすい 一方では 他の何千もの種が絶滅しつつある 12 段落要約 フィリピンの米や中国の小麦のように、 生き残っている種のほうが少ない。 (34字) ⑧ For example, / in the Philippines, / there were once thousands of varieties of rice; / now fewer than 100 are grown たとえば 今ではそこで栽培されているのは100種 フィリピンには かつて数千種類の米があった there. // ⑨ In China,/ 90 percent of the wheat varieties/ grown just a century ago / have disappeared. // ⑩0Experts 中国では小麦の品種の90%が もない ちょうど1世紀前に栽培された 姿を消している 専門家は考 believe / that over the past century,/ we have allowed more than half of the world's food varieties to disappear.// えている 過去1世紀で 世界の食用品種の半分以上が消滅していると

未解決 回答数: 1
英語 高校生

この問題、自分で読んでも全く内容が分からなかったのですがわかる方いらっしゃいますか?? ターゲット1900の単語だけだと足りませんか? また、文法はどのくらいのレベルでしょうか。参考書で教えていただけると助かります。 よければ問題の解説もお願いしたいです。 時間がある方どう... 続きを読む

Ⅰ. 次の英文を読んで、下の間に答えよ。 Early in the pandemic, Julie Van Rosendaal started to notice something (1) about the butter she was using in her cooking and baking. It seemed harder than it used to be. Van Rosendaal has a food blog (2) DinnerWith.Julie.com. She talks about food on CBC radio and writes about it in magazines and newspapers. Before, when she left butter out of the fridge, it used to go soft; it was easy to spread on bread. (3) these days, she noticed that if she wanted soft butter, she had to put it in the microwave. If she used it right out of the cupboard, it would tear holes in her bread. Was her kitchen too chilly? Or had something about Canadian butter changed? On Feb. 5, Van Rosendaal posted her suspicions on social media. More than a thousand people on Facebook and hundreds on Twitter commented that they had been noticing the ( 4 ) thing. The answer seems to be that Canadian dairy cows, which produce the milk that is made into Canadian butter, (5) likely being fed more palm oil fats in their feed than before, XV As more people began doing more baking and bread making during the pandemic, the demand for butter went up. Using palm fats in livestock feed can increase the amount of milk cows produce, which helps farmers to meet the increased demand for ( 6 ). Some people don't want palm fats in their diet, because they say it isn't heart-healthy. (7) say it changes the taste and texture of

未解決 回答数: 1
英語 高校生

文章問題です💦 教えていただけると助かりますm(*_ _)m

22 Living in Several astronauts from different countries live and work on the International space there is no gravity. So life in space must be In Space Station (ISS). different from that on the Earth. There are some questions about the life in space. to ). How do astronauts stay healthy? They eat space food. It has plenty of (astronauts / healthy / keep / nutrition / There are many kinds of delicious foods these days. For example, Japanese astronauts have taken curry, nikujaga and mochi to the ISS. Also, getting exercise is important. Astronauts have to do exercises with machines Without gravity, their for about two hours every day. bodies become weak if they don't do exercises. How do astronauts take baths? In space, water is very precious and doesn't fall down. That's ( ℗ ) astronauts use very little water to wash their hair. They use a special shampoo and wipe it off with a dry towel. Also, they wipe their bodies with a wet towel. How do you feel about this lifestyle? Someday you also may be able to experience life in space. mod aswor A 下線部①の()内の語を, 意味のとおる英文になるように並べかえなさい。 It has plenty of B②の()内に入る適切な語をア~ウから選び,記号を書きなさい。 what who why C 本文の内容にあうものに あわないものに×を書きなさい。 1 宇宙食には種類がたくさんあるが, 日本食はまだない。 2 宇宙飛行士は毎日約2時間, 機械を使って運動をする。 3 宇宙空間では水が乾かないため, 風呂に入ったり, シャワーを浴びることができない。 Notes astronaut space food wipe... off ・・・をふき取る ISSでトレーニングする 油井亀美也さん nutrition ** International Space Station 国際宇宙ステーション fall down 落ちる lifestyle #t precious 貴重な wet ぬれた towel タオル gravity ジュニア

解決済み 回答数: 1